Locomotive-boiler furnace.



C. B. MOOREr LJCOMUTWE BLER FURNASE. MPL10/mon HL'ED DEC. re, ma.

Pfltene' May 4, ,1915.

UNITED STATES PATENTl oEEIeE.

CHARLES B. Mo'oEE, oF EvANs'roN, ILLINoIS, AssIGNoR, BY MEsNEASSIGNMENTS,

TO AMERICAN 'ARCH CQMPANY, WARE.

To all whom it may concern l Be it known that I, CHARLES B. Moonn,citiz'enof the United States,and a resident of thecity of Evanston,county of Cook, and State of'Illinois, have invented certain new anduseful Improvements in Locomotive- Boiler-Furnaces, of which thefollowing is a specification.'

"My invention relatesito improvements'in llocomotive boiler furnaces,and has special reference to. improvements inv refractory -baliies orWalls, commonly called arches, for

the ireboxes of locomotive boilers.

vThe general objects of my invention are to provide a refractory archfor Ainstalla-tion and fuse. in locomotive -boiler lireboxes, ofcomparatively,lightweight low cost ;to provide 'an arch particularlyadapted for 1nstallation in locomotive furnaceshaving in-` clined archAtubes and which shallgfind'its Asupport thereon; to provide anv archcon- 'struction which will readily adapt itselfto boilers of varyingdimensions and arrangements of tubes; and parte of which can be readilyremoved to afford easyA access to Y the stay bolts;

sidesheets for the repairl of and to provide an arch which,l on accountof Vitspeculiar construction and arrangement of parts, willmaterially Iassist 1n the commingling and admixiug of the firebox gases, to the endthat substantial'lyv perfect combustionwill be'1 attained in thefirebox.

' A more `special object of my inventionis f to provide a refractoryarch structure which,

while .flillingfthe above general objects,

will be especially radapted for installation V and use in` comparativelywide locomotive boilersiaiid especially in such boilers which'areequipped with ltwo inclined arch tubes which are comparatively widelyseparated.

M iuventionconsists in the assemblages of elements, *combinations* andlrelations of whereby the above objects are attained together withothershereinafter appearing, and all as hereinafter fully describedwithreference toftheaccompanying drawings, which form a part of thisspecilication, andV particularlyr and definitely pointed out intheappended claims.

,. In said drau-'ings: Figure l is a central,

vertical longitudinal sectional view of alocomotivc lirebox equippedwith an arch illustrating one embodiment of my invention ;"Fig. alfragmentary horizontal sectional view ofthe iirebox on the line 2-2A ofSpecification of Letters Patent.

LocoMoTIvEQEoI'LEn' EURNACE.

Patented May 4, 1915.

n Application filed December 18, 1911. Serial No. 666,350.

Fig. 1;'Fig. 3 is a tional viewn' the line is a detailjtransversesectional 'view of the arch on' the` line 5,-5 of Fig. 3; Fig. v5 is adetailtransverse sectional viewof the arch ontheline 6-,6hof Fig.4 3. y

My invention is cap ble of embodiment in reffactory4 arches'of varinisdetails 'of construction and occupyingidi'erent positions in the lreb'xand, although `If have chosen to confine,.th/illustration ofthe'invention to so-called' front arches, jit'will be readilyu`ndersto'dl that my l invention is 'not thus limited.4v`l n fSo-kcall'ed fijont 'a'1'ch,e' s us'ua1ly occupy an inclined" pofsitiovat' the front; lend of the fireboX jelose/t or inh'contactjwith theflue sheet, a1d',`usuall V. extend from" side sheet to side, sheet,l anin.' `fireboxe'-s which are y equipped inclined 'circulating tubes findtheir Vsupport thereon. .The principal :funcj-j 3-3 of Fig. 1; Fig. 4.-

, tion ofthisfformfof archfis tol deflect the which 'embody myinventvonnot only have the above `:impor,tant ,'funetionljbut r.they areproferably lformed of :individual lbriclis which are`- so formed "inisemble'dl and related n t .5e arch-'fis "produced which diversely)arranged ach' other that an which .o m'aterially,v assist` yinv 'thethorough 4commin'gli*ng audzadmixingwof nthe frebok gases as'theyfql'rise- "through 'the iirebqx. These fvariousf defi'ecting'4walls" and surfaces also ...asista-the.return 'tothe `fuel heey ofthe'kmore soli'dfuejl particles andcinders.-

ward end,a`rear, .Sheet Batits rearl end con- 'rnected'by sidesheets4,4,`"and a crown sheet 5. -'grate' is'proyided attlie lower endof the firebox. Flues-7ylead forward from the flue 4slreetalnd .the rearsheet is provided with vertical transverse secthemselves and as? -Assli-own j'i'u l,the fdrawingsy a :locomotive vlxrcboXg-is formedoffaffl'ue sheet `2 at `its. forlis-.p'rovided with j V a l y andpositioned gas flectmgsurfaees' `rand ipo'cketfsw'or cavities twocirculating or arch tubes 9. -As usual, these tubes extend from thelower portion. of the flue sheet upwardly and rearwardly to the rearsheet and assist in the circulation of water between the front and .rearlegs oi'v the boiler. The tubes 9, as shown in the drawings, arearranged quite close to the side.

stay in-place regardless of the severe arring effect to which they aresubjected.

In buildin iny arches I use two inaii forms of bric ts, limiting theirsizes only by the necessary features that they shall not be too heavy inthemselves for convenient handling, nor 'so large that they cannot bereadily passed through the fuel. or fire door. These two forms of brickscoinprise the arch. or span bricks a and the cover or roof bricks t. Thespan bricks a are'adapted to be used in pairs tospan the space betweenthe tubes and they are 'formed to rest firmly on the tubes at theirlower ends and abut together at their upper ends. Each pairthus forms aspan or arch 10 between the tubes and these bricks 'are formed tointerlock at their abutting,` ends so that they are in a senseseltsupported arches.` These spanslO are spaced apart upon the tubes 9and are held in spaced relation by means of the cover bricks 2') whichlind their support upon the spans 10 and in a practical sense close thespaces between these spans. I complete the arch by closing the spacesbetween the tubes and the side sheets by means of bricks c somewhatsimilar-to the cover bricksb, but formed especially 'this purpose. .ltwill be uiiderstood that the main part of the arch is in a sensecomplete in itself iorincd up as it is ot the spans l0 and. the coverbricks '6, and vthe side bricks cfinay or may not be 'used :is may bedesirable in. the particular boiler in which the arch is installed..

' The span bricks a, two oit which form a span 10, are together longerthan the space between the tubes and hence when placed in position` theyoccupy an inwardly and upwardly inclined position resting at theirlower` ends upon the tubes and at their up per 'ends lagainst eachother.v ends are provided with grooies or sockets (d adapted to beiii'iiily seated upon the tubes i) and their upper ends are provided`with interlocking tongues a2 and grooves of which,

, rest firmly receive the inner ends oi AThese bricks c are arranged n ian' upwardly r)"heiilower.

when the bricks are in position, prevent relaf' tive vertical movementof thc abutting ends of the bricks, and hence retain them ininterlockedv con dition. l

It will beunderstood, of course, that the weight of' tliebi'icks holdsthem in their desired position. 'Ihese bricks a are' wide enough wherethey rest upon the tubes 9 to thereon without rockingl and l niake thesebricks deep enough to gire them suilicient strength to carry their ownweight and the weight of the siipei'posi-.d corei' bricks b. I furtherforni them with a ninnbcr ot gas dcflecting l, Afui-ther i'orni thebricks i with sidcs'to their desired strength. lower or outer ends oithe grooves or gains a' upon their upper inclined position resting :ittheir iiiici'y ends upon the lower or outer ends o'l thil bi'icksul andat their outer erds against the side sheets 4. These bricks if not onlylill in the space between theI inaiii part o? the side sheets, but

he side bricks uw pockets or cavities' a" in their lower siii-faceswhich lighten the bricks.. to a certain extent without doti-actingil'i'oni arch and also :ict :is lockingihricks tov assist in themaintaining ol' .the arch against v,

lateral movement in the irebox :in d thus move some of the lateralstrain ot the weight of the arch :t'ronrthe tubes. The bricks c arepreferably formed with an inncrvtongue c which overlaps the lower jointbetween 4the' `two bricks. ,'lhcy .'pans l() are heldapart and thespaces between thcn'i are lillcd by vthev vcover or roof bricks Iusually prefer to arrangi-A two o'l'j thecover bricks betweencorrespoiuling span bricks, as

shown in F l to il. These bricks areal",

Aranged between the upper edges ot' the span end oi" the arch brick (Land assists in n'iakii'ig a gas tight collect thereon are not retainedbut are caused to slide down oil' oi' the arch and be returned to thefuel body upon the grate.

lt will be understood 'that the cover bricks i iis might be plain slabsor plates and. fulfil the function oi illing the spaces. between thespan bricks iiioresecurcly hohl the spans in proper position. and forthe pui-pose of providing the tops ol the spaces between .the spans within pockets and i'ihn-aliiy of smaller.gaze-iniuii'ig dellertingsiii-faces, l provide the lower sui-, faces oi' lhicoif'ei" bricks withlongitudinally :ii-ranged ribs bgconnected at theirmiddle portionn'itlrtrausvcrse ribs IP.' The ends of thel ribsI are arranged toubiitthesides of lthe arch bricks and assistin maintaining them in position.This construction ol" the and spacing theinapart, but toizii 1 Y, assistinthe convenient or easy cover bricks provides them with a plurality ofsmall gas-mixing pockets b in their under surfaces. It Will noted thatregardless of the shape or form of the individual bricks of the arch theconstruction as herein outlined provides an arch `with gas-deflectingsurfaces arranged at various angles and also with gas-mixing pockets orcavities, side or locking bricks '-c are provided -on their under sidewith cavities c2 similar to the cavities in the other bricks onlylighten these bricks but assist in the admixing of the fire-box gases..IV prefer t0 form the outer endsof the bricks c with narf ioW centralprojections ca which not only fitting ofthe arch tothe iireboX, in thatthe narrowy pro'- jections are more easily trimmed. orl broken than. thewhole'width 4ofthe brick, but they also result in the sideisheets beingprotected to only a slight extent from the heated fire-v box gases.

The installation of =one of inyfarches rin the fireboxis acomparativelysimple mab' ter. I first place a span composed o'fa pair of the spanbricks a upon the lower ,ends of the tj bes 9 and space them from thelue Y u l n,

` Sheets'of the jrebox,.thejinner`ends ofthe iside/bricks vand the p by'means of a spacing block lor brick d. This brick al is arrangedbetweenthe apexof the span andthe iue sheet;r It is formed upon its rear 'endto. interlock with the'bricks aand thus beheld from `fall-- ing, thevweight ofthe arch when completed holding-it-iirmly against the' flue'sheet. I next arrange-ay second span above the. first span, yupon thetubes, and lhold it in position by placing `the roof or cover'bricks' bbetween the spans.

bricks are deep 'enough/so that the lower cover bricks contact With thetubes 9 and this prevents the cover bricks from sliding down loutof'thcir proper lposition.' Should it be desirable, `further yspans andcover bricks may be `placed in position to build an arch ofthe desiredlength or height. Having,r thus formed the main part of. the arch I 3.

then place the side briekscinposition at the ends of the span bricks andbetween these I place furthei .side bricks resting their inner endsuipontheputeiv edges of the c lower cover bricks.. The tongue c.' of the sidebricks rests upon the upper surfaces of the cover bricksiand thus holdstheA inner ends of theside briclni4 in position.4 This form of arch,being spaced from the flue sheet'by the block d, providesopenings 11 Afstructedl and arranged asin cause the side it is usually necessary ytoremove only the which not spans, eachitheieof composed o a, plurality 0froof bricks The ribs b2 .on the cover and side bricks ytially.horizontal f and 'vertical tion to the Vspecific structures herein`shown and described. l i,4 Having thus described my invention, I

'claim as new and desire to secure by Letters Patent: y

1, A-.loc'omotive boiler fire box .equipped Withtvvo Widely separatedinclined archsipportiiig tubes'i,ii combination with a refractoryarch'supported by said tubes and y.held in' 'spaced relation froml theflue sheet,

said arch ,comprising a pluralit of `arched y I fY two bricks abuttingsubstantially fnidway between the tubes arranged between the spanbrickss'paeing'them'apart and closingthe openings beti'iireen them,means preventing -lateralfnioveinciitf the roof bricks .en thevspanj'brcks, and comprising side brickssupportediat 'their 'inner en dsby vthe span bricksaiidgthe rooffbiicksand at their outerv Vends"`wedgingly engaging the .side

` y'outer edges of :the arch being formed tofpro'vide. 'coperating sub-`stantially'horizpntal and vertical faces,'as and for thepurposespecified.

vtheir ,outer edges against `respective side vsheets and,l atv V'theirinner ledges upon the outer edges ofthel arch bo`dy, the outer edges ofc thel arch' .body and the inne'i'edges of the refractory lcaves'pbeingformed With coperating substantially horizontal and vertical faces, asandy for the purpose specified.

A locomotive reboxV com rising in combination,A side'fivalls, loiigitufvina'lly inclined circulation tubes between vsaid side Walls, and avbaliie Wall on "saidftub'es comprising intermediate brick resting uponthe circulation tubes,v and 'side brick inclined in position and havingtheir outer ends restv2.) A -ipeqnotiyabaiierarebox inetmbinationfvvithtvvo inclined arch supporting tubes -therein arranged'close toQrespectivel side and fwedgingly resting thereon, and l inga'gaiiist'the side Walls, said intermediate being provi ded withlsubstan- K c coperating faces,'said.v faces being respectively so con*brick to bear downwardly upon the intermediate brick and `horizonta lvagainst the saine.

4:. A locomotive boiler fire .box and its side vsheets yin combinationwith longitudinally arranged circulation tubes therein, a refractorybaille extending from side sheet to side sheet supported by the tubesand comprising iso intermediate bricks resting on and supported by thetubesand side bricks in inclined position,` their outer ends restingagainst the side sheetsand their inner ends formed to coperate-withI theouter ends of the intermediate bricks and provided withsubstantiallyhorizontal and vvertical contacting faces, as and for the purposespecified.

5. A locomotive boiler fire boX and its side sheets in combination withlongitudinally' arranged circulating tubes therein, a refractory baillelwall on said tubes comprising'intermediate bricks resting onv andsupported by said tubes, and provided with portions depending betweenends against the side sheets and their inner ends formed to providefaces supported upon the upper faces of the'adjace'nt intermediatebricks and other faces bearing against the end faces of the intermediatebricks, as and for-the purpose specified.

' 6. A locomotive boiler fire box having longitudinally arranged archtubes therein, 'in combination. with `a refractoryl arch body supportedby the tubesand comprising 1n-y termediate bricks 'resting at-their endsupon the tubes and side bricks'arranged in inclined position, their`outer ends resting against the side sheets*v and their inner endsresting'i/onthe'ou'ter ends of the adjacent intermediate bricks, theouter ends of' the inhe tubes and side bricks 4inclined 1n 'positionresting at their'outer termediate bricks being'formed to presentsubstantiallyhorizontal and vertical faces for contact with the innerlends Vof the side bricks, as and `for the purpose specified` 7. Alocomotive boiler ire box having archtubes extending longitudinallythere- -in, in combination with a refractory varch body extending fromside sheet to side sheet restn lupon the tubes and comprising intermei'ate bricks resting at their ends upon the tubes and having partsdepending bev tween the tubes and provided at their outer ends withV-grooves in the upper edges thereof, and side bricks resting at theirouter vends against the side sheets and havin Atheir inner ends in saidV--grooves, as and orthe purpose specified.

' 4 8. A locomotive fire box provided with arch tubes, in combinationwith a refractory f' arch body supported on said tubes and side bricksfor engagement with the sides of the fire boX and Seach' --formed withhaV-groove `at. its inner end, for complementary engagement with eitheredge'zof said arch body;

In testimony whereof, I have hereunto set `my hand, this 5th day ofDecember, 1911, in

